Piston.



C. B. STEBBINS.

v PISTON.

APPLICATION FILED JUNE 25.1915.

, 1,157,130, 1 V Patented 0 ct-.19,-1915.

WITNESSES; I l/vmv 70/? 1 7 UNITED {STATES PATENT oEEmE.

" GHARIiES E. s'rEBBINs, or THREE RIVERS, MICHIGAN, AssIeNo ro SHEFFIELD can COMPANY, OF THREE RIVERS, MICHIGAN.

rrsron.

To all whom z'tmay'concm: 5 Be it known that I, GHA L S B. -S rE BB1N s, a citizen of the United States, residing at First, to provide in a piston aniimproved looking or retaining means for the piston' pin. Second, to provide inj-a piston an impiston pin which eifectively retains the pin and at the same time permits its convenient removal quires. if .1 a

I Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish theobjeets'of my invention y the devices'and means described in the following specification. v The invention is clearly defined ed out in the claims. 1

I A structure which ment ofmy invention is clearly illustrated in the accompanying drawing Fig. II is a longitudinal central section on In the drawing, similar reference characters refer to similar'parts throughout the several views, and the sectional views arev 'gtak'en looking in thedire'ction of the little 4 arrows at the ends of-the' section lines.

Referring to the drawings, .1 represents the cylinder of an engine and 2 the iston, the pistonillustrated being,designe d or two cycle explosion engines.

vided with bores 3'for the 'piston pin 4 and preferably has inwardly projecting piston pin supporting flanges 5'. One of these flanges 5 is provided with a locking pinhole 6' Specification of Iltetters Patent. Application filed .Tune 25, 1915 Seria.1No. 36,305.

Three Rivers, in .thecounty of St. J osephproved looking or retainingmeans for the and replacement as occasion re-v and pointis-a preferred embo'di forming a I. 1 part-of this specification, in which FigureI is a detail vertical section through a cylinderand piston-embodying the -'fea- :I tures of my invention'transversely of the piston pin ona line corresponding toline' v 1-1 of Fig. II, the piston rod being omitted.

The piston is pro-' he tubular piston pin it is provided with a locking pin hole 7 registering with-the Patented 0a. 19, 1915.

pin hole 6in the flange. 'The locki ng pin 8 is disposed in these holes with its head 9 within the pin 8 is'retained by V which is shouldered at 11 to engage the head of the pin', the pin, being overla ped by the locking plug in the shoulder, lmiting the, p

of the locking plug. The

is retained in the pistonpin by I inward movement locking plug the walls of the cylinder when the piston is assembled therein. By this simple means I effectively retain the piston pin and at the same time it can be quickly removed for any purpose and replaced.

In assembling it is only-necessary to slip bringing the inside of the the' cylinder arranged. In

disassembling the piston is can be rom the inside of the piston.

easily assembled, and when assembled are perfectly secure. J

fforin'in which I have em odiedthem in use.

scribecertain mo'dlfications which might be desirable for diflere'nt adaptations of my improvements as I believe thexdisclosure made will enable those skilledin" the art to which my invention relates to embody or may require.

Having thus described my invention, what fhollow piston having piston-f pin I bores through the walls thereof pro'ecting flanges about the sai flanges having-a locking pin hole therethrough, atubular pistonpin having; a transverse locking pin hole therein'register-. ing with said locking a headed locking pin and inwardly bores, one of disposed in said hoes in said piston .pin and-fl ith it h d. P Q pin and a lock on the inside of the Ting pin retaining plug disposed in'said pishave shown' 'my im rovements in the.

have not attempted to illustrate or de-.-

adapt my improvements as circumstancesv pin hole in said flan e,

piston pin.; The locking.

the locking plug 10 i the piston pin. into the cylinder bores 3,

I holes 6' and 7 into register, and drop the locking pin 8 into'place from the p ston pin. The retaining plug;

9 is then insertedand when the piston 1s in the; parts cannot/become dis-;

The parts are very simple and economical to produce, and, as stated, quickly andi I ton pin and shouldered to engage and overlap said locking pin, said plug being retained by the wall of said cylinder, its in-' ward movement being limited by said looking pin.

2. The combination of a hollow piston having piston bores through the walls thereof and inwardly projecting flanges about the bores, one of said flanges having a locking pin hole therethrough, a tubular piston pin having a transverse locking pin hole in said flange, a headed locking pin disposed in said holes in said piston pin and flange with its head on the inside of the piston pin, and a locking pin retaining plug disposed in said piston pin to-engage locking pin hole in said flange, a looking I pin disposed in said holes in said piston pin and flange and removable from the inside of the piston pin, and a locking pin retaining plug disposed in said piston pin to engage and retain said locking pin, said plug being retained by the wall of said cylinder.

' 4. The combination of a hollow piston having a piston pin bore in the wall thereof and an inwardly projecting flange about the bore, said flange having a locking pin hole therethrough, a tubular piston pin having a transverse locking pin hole therein reg1s-' tering-with said locking pin hole'in'said flange, a locking pin disposed in said holes in said piston pin and flange and removable from the inside of the piston pin, and a locking pin retaining plug disposed in said piston pin to engage and retain said locking in; p 5. The combination with a cylinder, of a piston having a piston pin bore therein, a tubular piston pin having a transverse looking pin hole therein, there being a locking pin hole in said piston registering therewith, a headed locking pin disposed in said holes in said piston pin and piston with its head on the inside of the piston pin, and a locking pin retaining plug disposed in the end of said piston pin and shouldered to engage and. overlap said locking pin, said plug being retained by the wall of said cylinder, its inward movement being limited by said locking pin. v

6. The combination of a piston having a piston bore therein, "a tubular iston pin having a transverse locking pin iiole therein, there being a locking pin hole in said piston registering therewith, a locking pin disposed in said holes in saidpiston pin and piston and removable from the inside of the piston'pin, and a locking pin retaining plug disposed in said piston pin to engage and retain said locking pin;

Inwitness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

' OHARLESZYB. STEBBINS; $.1 p Witnesses: M

'ORLEY R. BAIRD, ADA BERGER. 

